package com.rd.student.ruanjian.class4.wangxingkai.TestOn_7_11;

import java.util.HashMap;

import static java.awt.SystemColor.info;

public class Test1 {
    public static void main(String[] args) {
        HashMap hashMap = new HashMap();
        hashMap.put("1", 5);
        hashMap.put("2", 7);
        hashMap.put("3", 6);
        hashMap.put("4", 6);
        System.out.println(hashMap.size());
        info(hashMap);
    }

    private static void info(HashMap hashMap) {
    }


}



     /*   int num=(int)hashMap.get("2");

        System.out.println(num);
        Object num1=(int)hashMap.get("8");
        System.out.println(num1);
    }*/
